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Tamiku [17]
3 years ago
7

An elevator is 180 feet above the first floor. each second it descends 12 feet

Mathematics
2 answers:
Bess [88]3 years ago
5 0

Answer:

-12

Step-by-step explanation:

Let x represent number of seconds.

We have been given that an elevator is 180 feet above the first floor. This means that elevation of elevator is positive 180.

We are also told that each second the elevator descends 12 feet. The elevation of elevation after x seconds would be -12x.

The final elevation of elevation after x seconds would be 180-12x, where, -12 represents change in the height of the elevator each second.

Therefore, -12 is our required integer.

DiKsa [7]3 years ago
4 0

\bf \begin{array}{cll} \stackrel{passing}{seconds}&\stackrel{feet~above}{1st~floor}\\ \cline{1-2} 0&180\\ 1&180-12\\ &168\\ 2&168-12\\ &156\\ 3&156-12\\ &144\\ ...&... \end{array}\qquad \qquad \stackrel{\textit{change in the height integer}}{\underset{\textit{common difference}}{-12}}

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